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Linux is an open source operating system that is used for computers, servers, mainframes, mobile devices and embedded devices. Linux is one of the most widely supported operating systems as it is available on almost every major computer platform, including x86, ARM and SPARC. Linux has been used in different ways for web servers, network operations, specific computing tasks, running databases, endpoint computing and running mobile devices with OS versions like Android. The Linux OS is open source, professionals and developers can all contribute to the kernel.